chore: Post v5.0.0 release maintenance

[spoo-bar]

• adding new upgrade handler

• updating versions in interchaintest

• updating changelog

• updating the software upgrade prop in chainupgradetest to be x/gov v1

• removing the custom denom config for interchaintest genesis as the framework takes care of it

[codecov[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (ffde5eb) 69.28% compared to head (9cab448) 69.28%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #474 +/- ## ======================================= Coverage 69.28% 69.28% ======================================= Files 70 70 Lines 4145 4145 ======================================= Hits 2872 2872 Misses 1169 1169 Partials 104 104 ``` | [Files](https://app.codecov.io/gh/archway-network/archway/pull/474?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=archway-network) | Coverage Δ | | |---|---|---| | [app/app\_upgrades.go](https://app.codecov.io/gh/archway-network/archway/pull/474?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=archway-network#diff-YXBwL2FwcF91cGdyYWRlcy5nbw==) | `61.90% <ø> (ø)` | |

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